'shadower' originates from the English word 'shadow', which comes from the Old English word 'sceadu', meaning 'shade' or 'darkness'.

'sceadu' transformed into the Middle English word 'schadow', and eventually became the modern English word 'shadow'.

Initially, it meant 'shade or darkness', but over time it evolved into its current meaning of 'a person who follows or observes someone closely'.